| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 244 | DD | ARRANGEMENTS FOR TREATING, FOR HANDLING, OR FOR FACILITATING THE HANDLING OF, FUEL OR OTHER MATERIALS WHICH ARE USED WITHIN THE REACTOR (e.g., within its pressure vessel) [G21C-19/00] {11} |
| DIG 256 | | .~ Characterized by their adaptation for use with horizontal channels in the reactor core [G21C-19/14] |